CN103715630A - Method for entering same-tower double-circuit alternating-current transmission line tangent tower equal potential - Google Patents
Method for entering same-tower double-circuit alternating-current transmission line tangent tower equal potential Download PDFInfo
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- CN103715630A CN103715630A CN201310690570.3A CN201310690570A CN103715630A CN 103715630 A CN103715630 A CN 103715630A CN 201310690570 A CN201310690570 A CN 201310690570A CN 103715630 A CN103715630 A CN 103715630A
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Abstract
The invention provides a method for entering a same-tower double-circuit alternating-current transmission line tangent tower equal potential. The method comprises the following steps: an operator arrives at a position parallel to a charged body of a high-voltage alternating-current transmission line through a grounded tangent tower and/or a closest position to the charged body and is at least kept away by a first distance, wherein the first distance refers to the distance between the operator and the charged body; the operator leaves the tangent tower, approaches the charged body and is at least kept away by a second distance, wherein the second distance refers to the sum of the distance between the tangent tower and the operator and the distance between the operator and the charged body; and the operator arrives at the charged body and is kept away by a third distance, wherein the third distance refers to the distance between the operator and the tangent tower. By the adoption of the method of the invention, the problem that operators may easily suffer from an electric shock and be injured in high-voltage and high-altitude environments is solved and the personal safety of operators is ensured.
Description
Technical field
The present invention relates to security fields, in particular to a kind of method that enters common-tower double-return transmission line of alternation current tangent tower equal.
Background technology
Qinghai-Tibet alternating current-direct current networking project, alternating current circuit is from the east of Qinghai Sun-Moon Mountain transformer station (height above sea level is 2408m), to Qaidam current conversion station (height above sea level is 2878m), total track length 700km, height above sea level is between 2680～4000m, and mean sea level is 3400m; Xinjiang exchanges networking project Qinghai section with northwest major network, current conversion station-fish card power switch station, Qaidam (height above sea level is 3450m)-shoal transformer station, and the circuit overall length 400km of Qinghai province, more than mean sea level 3200m.Straight line pole is horizontal I type insulator string structure, 6 bundle conductors.For this special circumstances, its electric pressure is defined as to 750kV.
Live line working is the necessary means that guarantees transmission line safe and stable operation, therefore,, after Qinghai-Tibet and blue or green new ac transmission engineering put into operation, also need to carry out live line working work, be operating personnel in the situation that circuit does not have a power failure, enter equipotential line facility overhauled.Operating personnel, from shaft tower earth potential, enter the equipotential engineering of wire, if method is improper, the injury of getting an electric shock may occur.For Qinghai-Tibet and the blue or green new this situation of networking project that exchanges, must adopt according to its special characteristic the equipotential method that enters of safety.
For in correlation technique under ac high-voltage, high altitude environment operating personnel's easily occur to get an electric shock problem of injury, effective solution is not yet proposed at present.
Summary of the invention
For operating personnel under ac high-voltage, high altitude environment, easily there is the problem of getting an electric shock and injuring, the invention provides a kind of method that enters common-tower double-return transmission line of alternation current tangent tower equal, at least to address the above problem.
According to an aspect of the present invention, a kind of method that enters common-tower double-return transmission line of alternation current tangent tower equal is provided, comprise: operating personnel arrives at the position parallel with the electrified body of HVAC power transmission line and/or the position nearest with described electrified body by the tangent tower of ground connection, and at least keep the first distance, wherein, described the first distance is that described operating personnel is to the distance of described electrified body, described tangent tower comprises: lower phase cross-arm, middle phase cross-arm and upper phase cross-arm, be respectively used to hang the lower phase electrified body of described transmission line of alternation current, middle phase electrified body and upper phase electrified body, described operating personnel leaves described tangent tower, close to described electrified body, and at least keeps second distance, wherein, described second distance be described tangent tower to described operating personnel's distance, with the distance sum of described operating personnel to described electrified body, described operating personnel arrives described electrified body, and at least keeps the 3rd distance, and wherein, described the 3rd distance is that described operating personnel is to the distance of described tangent tower.
Preferably, described the first distance, second distance and the 3rd distance are determined according to maximum working voltage and input operating range.
Preferably, described maximum working voltage and input operating range are to determine according to the height above sea level in the region of described tangent tower setting and atmospheric density.
Preferably, operating personnel arrives at the position parallel with the electrified body of HVAC power transmission line and/or the position nearest with described electrified body by the tangent tower of ground connection, and at least keep the first distance to comprise: described operating personnel in the situation that the lower phase tower body of described tangent tower, at least remain on described tangent tower lower phase tower body described operating personnel to the distance of described lower phase electrified body be described the first distance; Described operating personnel in the situation that the middle phase tower body of described straight line tower body, at least remain on the middle phase tower body of described tangent tower or the described operating personnel of described lower phase cross-arm to the distance of described middle phase electrified body be described the first distance; Described operating personnel in the situation that the upper phase tower body of described straight line tower body, at least remain on the upper phase tower body of described tangent tower or the described operating personnel of described middle phase cross-arm to the distance of described upper phase electrified body be described the first distance.
Preferably, described operating personnel leaves described tangent tower, close to described electrified body, and at least keep described second distance to comprise: in the situation that described operating personnel phase tower body from described tangent tower is close to described lower phase electrified body, the lower phase tower body that at least keeps described tangent tower to described operating personnel's distance, with described operating personnel extremely the distance sum of described lower phase electrified body be described second distance; In the situation that described operating personnel phase tower body from described tangent tower is close to described middle phase electrified body, the middle phase tower body that at least keeps described tangent tower to described operating personnel's distance, with described operating personnel to the distance sum of described middle phase electrified body be described second distance, and keep described lower phase cross-arm to described operating personnel's distance, with described operating personnel extremely the distance sum of described middle phase electrified body be described second distance; In the situation that described operating personnel phase tower body from described tangent tower is close to phase electrified body on described, the upper phase tower body that at least keeps described tangent tower to described operating personnel's distance, with described operating personnel to the distance sum of described upper phase electrified body be described second distance, and keep described middle phase cross-arm to described operating personnel's distance, with described operating personnel extremely the distance sum of described upper phase electrified body be described second distance.
Preferably, described operating personnel arrives described electrified body, and at least keep described the 3rd distance to comprise: in the situation that described operating personnel arrives described lower phase electrified body, at least to keep described operating personnel to be respectively described the 3rd distance to the distance of the lower phase tower body of described tangent tower, described operating personnel to the distance of described lower phase cross-arm; In the situation that described operating personnel arrives described middle phase electrified body, at least keep the distance of described operating personnel to the distance of the middle phase tower body of described tangent tower, described operating personnel to described lower phase cross-arm, and described operating personnel is respectively described the 3rd distance to the distance of described middle phase cross-arm; Described operating personnel arrive described on phase electrified body in the situation that, at least keep the distance of described operating personnel to the distance of the upper phase tower body of described tangent tower, described operating personnel to described middle phase cross-arm, and described operating personnel is respectively described the 3rd distance to the distance of described upper phase cross-arm.
Preferably, described HVAC power transmission line is ± 750kV transmission line of alternation current.
Preferably, described operating personnel dresses a complete set of shielding clothing.
By the present invention, adopt operating personnel to arrive at the position parallel with the electrified body of HVAC power transmission line and/or the position nearest with electrified body by the tangent tower of ground connection, and at least keep the first distance, wherein, the first distance is that operating personnel is to the distance of electrified body, tangent tower comprises: lower phase cross-arm, middle phase cross-arm and upper phase cross-arm, be respectively used to hang the lower phase electrified body of transmission line of alternation current, middle phase electrified body and upper phase electrified body; Operating personnel leaves tangent tower, close to electrified body, and at least keeps second distance, wherein, second distance be tangent tower to operating personnel's distance, with the distance sum of operating personnel to electrified body; Operating personnel arrives electrified body, and at least keeps the 3rd distance, and wherein, the 3rd distance is that operating personnel is to the mode of the distance of tangent tower.Solve operating personnel under ac high-voltage, high altitude environment the problem of injury of getting an electric shock has easily occurred, and then guaranteed operating personnel's personal safety.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 enters the flow chart of common-tower double-return transmission line of alternation current tangent tower equal method according to the embodiment of the present invention;
Fig. 2 is 750kV transmission line of alternation current tangent tower structural representation according to the preferred embodiment of the invention;
Fig. 3 is the schematic diagram at the lower phase tower body of tangent tower according to preferred embodiment of the present invention operating personnel;
Fig. 4 is the schematic diagram that preferred embodiment operating personnel leaves the approaching lower phase electrified body of lower phase tower body of tangent tower according to the present invention;
Fig. 5 arrives at the schematic diagram of lower phase electrified body according to preferred embodiment of the present invention operating personnel;
Fig. 6 is the schematic diagram at the middle phase tower body of tangent tower according to preferred embodiment of the present invention operating personnel;
Fig. 7 leaves the schematic diagram of the approaching middle phase electrified body of middle phase tower body of tangent tower according to preferred embodiment of the present invention operating personnel;
Fig. 8 leaves the schematic diagram of the approaching middle phase electrified body of middle phase tower body of tangent tower according to preferred embodiment of the present invention operating personnel;
Fig. 9 arrives at the schematic diagram of middle phase electrified body according to preferred embodiment of the present invention operating personnel.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
The embodiment of the present invention provides a kind of method that enters common-tower double-return transmission line of alternation current tangent tower equal, Fig. 1 is the flow chart that enters common-tower double-return transmission line of alternation current tangent tower equal method according to the embodiment of the present invention, as shown in Figure 1, the method step comprises:
Step S102: operating personnel arrives at the position parallel with the electrified body of HVAC power transmission line and/or the position nearest with electrified body by the tangent tower of ground connection, and at least keep the first distance, wherein, the first distance is that operating personnel is to the distance of electrified body, tangent tower comprises: lower phase cross-arm, middle phase cross-arm and upper phase cross-arm, be respectively used to hang the lower phase electrified body of transmission line of alternation current, middle phase electrified body and upper phase electrified body.
Step S104: operating personnel leaves described tangent tower, close to electrified body, and at least keep second distance, wherein second distance be tangent tower to operating personnel's distance, with operating personnel to the distance sum of electrified body be the second preset distance.
Step S106: operating personnel arrives electrified body, and at least keep the 3rd distance, wherein, the 3rd distance is that operating personnel is to the distance of tangent tower.
From above description, can find out, operating personnel is the in the situation that of tangent tower, operating personnel at least remains the first distance to the distance of electrified body, in the situation that leaving tangent tower and approaching electrified body, the distance sum of operating personnel and tangent tower and operating personnel and electrified body at least keeps second distance, and in the situation that arriving at electrified body, operating personnel at least keeps the 3rd distance to the distance of tangent tower.By said method, solved operating personnel under ac high-voltage, high altitude environment the problem of injury of getting an electric shock has easily occurred, and then guaranteed operating personnel's personal safety.
It should be noted that, the first above-mentioned distance, second distance and the 3rd distance are determined according to maximum working voltage and input operating range, wherein, maximum working voltage and input operating range are to determine according to the height above sea level in the region of tangent tower setting and atmospheric density.Wherein, for example, impact due to high height above sea level and atmospheric density, make to exist and sea level maximum working voltage and switching overvoltage from different places on circuit, when the voltage of HVAC power transmission line be ± during 700kV, its maximum working voltage is 800kV, and maximum switching overvoltage amplitude is 1440kV.
According to the difference of operating personnel position with it the tangent tower, wherein, the mode that operating personnel keeps a safe distance is also different.For example, as operating personnel in the situation that the lower phase tower body of tangent tower, at least keep operating personnel to the distance of lower phase electrified body be the first distance; As operating personnel in the situation that the middle phase tower body of tangent tower or lower phase cross-arm, at least keep operating personnel to the distance of middle phase electrified body be the first distance; As operating personnel in the situation that the upper phase tower body of tangent tower or middle phase cross-arm, at least keep operating personnel to the distance of middle phase electrified body be the first distance, wherein, the lower phase transmission pressure that lower phase electrified body is transmission line.
Same, according to the difference of the residing position of operating personnel, the mode that operating personnel keeps a safe distance is also different.In process at the lower phase tower body that leaves tangent tower near lower phase electrified body, at least keep lower phase tower body to operating personnel and operating personnel extremely the distance sum of lower phase electrified body be second distance; Leave the middle phase tower body of tangent tower or lower phase cross-arm approach in the process of phase electrified body, the distance sum of the middle phase tower body that at least keeps tangent tower to operating personnel's distance and operating personnel to middle phase electrified body is second distance, and to keep the distance sum of lower phase cross-arm to operating personnel's distance and operating personnel to middle phase electrified body be second distance; On leaving phase tower body or middle phase cross-arm near in the process of phase electrified body, at least keeping upper phase tower body to operating personnel's the distance and the distance sum of the supreme phase electrified body of operating personnel of tangent tower is second distance, and in keeping, phase cross-arm to operating personnel's distance and the distance sum of the supreme phase electrified body of operating personnel is second distance.
Same, the different electrified bodies that arrive at according to operating personnel, operating personnel's mode that keeps a safe distance is also different.In the situation that arriving at lower phase electrified body, at least keep operating personnel to the distance of lower phase tower body and/or lower phase cross-arm be the 3rd distance; In the situation that arriving at middle phase electrified body, at least keep operating personnel to the distance of middle phase tower body and lower phase cross-arm and middle phase cross-arm be the 3rd distance; On arriving at, phase electrified body in the situation that, the distance that at least keeps the supreme phase tower body of operating personnel and middle phase cross-arm and upper phase cross-arm is the 3rd distance.Wherein, the upper phase transmission pressure that upper phase electrified body is transmission line.
Preferably, HVAC power transmission line ± 750kV transmission line of alternation current.
Preferably, operating personnel dresses a complete set of shielding clothing.
In order to make technical scheme of the present invention and implementation method clearer, below in conjunction with preferred embodiment, its implementation procedure is described in detail.
This preferred embodiment be a kind of in 750kV Qinghai-Tibet, 3000m area and blue or green new networking common-tower double-return transmission line of alternation current tangent tower enter equipotential secured fashion.
Lower while carrying out live line working mutually: first operating personnel dresses a complete set of shielding clothing and steps on tower from ground and arrive tower body and wire horizontal level, step on that in tower process, at least to keep the distance of operating personnel and electrified body be the first distance; Secondly, operating personnel takes insulation delivery vehicle from tower body and enters high electric field, enters in process, and at least keeping the distance sum of earth electrode to operating personnel's distance and operating personnel to electrified body is second distance; When operating personnel arrives electrified body place, at least keep operating personnel to the distance of earth electrode be the 3rd distance.
Middle phase/on while carrying out live line working mutually: first operating personnel dresses a complete set of shielding clothing and from ground, steps on tower and arrive tower body and wire horizontal level, steps on that in tower process, at least to keep the distance of operating personnel and electrified body be the first distance; Secondly, operating personnel takes insulation delivery vehicle from tower body and enters high electric field, enters in process, and at least keeping the distance sum of earth electrode to operating personnel's distance and operating personnel to electrified body is second distance; When operating personnel arrives electrified body place, at least keep operating personnel to the distance of earth electrode be the 3rd distance.
Pass through the preferred embodiment of the present invention, can make live line working personnel in Qinghai-Tibet and blue or green new there is very high fail safe in entering tangent tower equal process in exchanging networking project, make in Qinghai-Tibet and blue or green new exchange live line working in networking project can be safely, carry out easily, improved the safe and stable operation level of transmission line.
Wherein, according to a large amount of analog reslts that high elevation correction aspect is carried out, learn:
1, when live line working personnel are during in earth potential, the distance that at least keeps the electrified bodies such as operating personnel and lower phase conductor be first apart from time, its insulation withstand voltage is greater than system maximum operating voltage 800kV and the maximum switching overvoltage 1440kV of system; When live line working personnel mediate current potential, at least keep operating personnel to the distance of the earth electrodes such as steel tower tower body, while being second distance with operating personnel to the distance sum of the electrified body such as lower phase conductor, its insulation withstand voltage is greater than system maximum operating voltage 800kV and the maximum switching overvoltage 1440kV of system; Live line working personnel when lower phase conductor equipotential, the distance that at least keeps the earth electrodes such as operating personnel and steel tower be the 3rd apart from time, its insulation withstand voltage is greater than the maximum switching overvoltage 1440kV of system maximum operating voltage 800kV and system.
2, when live line working personnel are during in earth potential, the distance that at least keeps operating personnel and middle phase/electrified bodies such as upper phase conductor be first apart from time, its insulation withstand voltage is greater than system maximum operating voltage 800kV and the maximum switching overvoltage 1440kV of system; When live line working personnel mediate current potential, at least keep operating personnel to the distance of the earth electrodes such as steel tower tower body, when extremely the distance sum of middle phase/electrified bodies such as upper phase conductor is second distance with operating personnel, its insulation withstand voltage is greater than system maximum operating voltage 800kV and the maximum switching overvoltage 1440kV of system; When live line working personnel mediate current potential, at least keep operating personnel to the distance of the earth electrodes such as steel tower below cross-arm, when extremely the distance sum of middle phase/electrified bodies such as upper phase conductor is second distance with operating personnel, its insulation withstand voltage is greater than system maximum operating voltage 800kV and the maximum switching overvoltage 1440kV of system; Live line working personnel when middle phase/upper phase conductor equipotential, the distance that at least keeps the earth electrodes such as operating personnel and steel tower be the 3rd apart from time, its insulation withstand voltage is greater than system maximum operating voltage 800kV and system maximum switching overvoltage 1440kV.
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is described, wherein, Fig. 2 is 750kV transmission line of alternation current tangent tower structural representation according to the preferred embodiment of the invention, and as shown in Figure 2, this tangent tower comprises: phase cross-arm 202 under steel tower, insulator 204, grading ring 206, wire 208, steel tower tower body 210, phase cross-arm 212 in steel tower, phase cross-arm 214 on steel tower.
Fig. 3 is the schematic diagram at the lower phase tower body of tangent tower according to preferred embodiment of the present invention operating personnel, as shown in Figure 3, operating personnel 32 has dressed a complete set of shielding clothing in ground under tower, step on steel tower to tower body 210 and lower phase conductor horizontal level, step in tower process, operating personnel 32 is in earth potential, and the distance of the electrified bodies such as operating personnel and wire is D1, for guaranteeing that the injury of getting an electric shock does not occur operating personnel 32, at least keeping D1 is the first distance.
Fig. 4 is the schematic diagram that preferred embodiment operating personnel leaves the approaching lower phase electrified body of lower phase tower body of tangent tower according to the present invention, as shown in Figure 4, operating personnel 32 takes insulation delivery vehicle 42 levels and enters high electric field, enter in process, operating personnel 32 current potential that mediates, operating personnel 32 is S1 to the distance of the earth electrodes such as steel tower tower body, and operating personnel 32 is S2 to the distance of lower phase conductor 208 electrified bodies such as grade, and should at least keep S1 and S2 sum is second distance.
Fig. 5 arrives at the schematic diagram of lower phase electrified body according to preferred embodiment of the present invention operating personnel, as shown in Figure 5, after lower phase conductor 208 electrified bodies such as grade of operating personnel's 32 contacts, in equipotential, operating personnel 32 is D2 to the distance of the earth electrodes such as steel tower top cross-arm/tower body, and should at least keep D2 is the 3rd distance.
Fig. 6 is the schematic diagram at the middle phase tower body of tangent tower according to preferred embodiment of the present invention operating personnel, and as shown in Figure 6, operating personnel 32 steps on steel tower to tower body 210 and middle phase conductor 208 horizontal levels, or to lower phase cross-arm 202 and middle phase conductor 208 proximal most position.Step in tower process, operating personnel 32 is in earth potential, and operating personnel 32 is D3 with the distance of wire 208 electrified bodies such as grade, and for guaranteeing that the injury of getting an electric shock does not occur operating personnel 32, at least keeping D3 is the first distance.
Fig. 7 leaves the schematic diagram of the approaching middle phase electrified body of middle phase tower body of tangent tower according to preferred embodiment of the present invention operating personnel, as shown in Figure 7, operating personnel 32 takes insulation delivery vehicle 42 levels and enters high electric field, enter in process, operating personnel 32 current potential that mediates, operating personnel is S1 to the distance of the earth electrodes such as steel tower tower body, and operating personnel 32 is S2 to the distance of middle phase conductor 208 electrified bodies such as grade, and should at least keep S1 and S2 sum is second distance.
Fig. 8 leaves the schematic diagram of the approaching middle phase electrified body of middle phase tower body of tangent tower according to preferred embodiment of the present invention operating personnel, as shown in Figure 8, operating personnel 32 takes insulation delivery vehicle 42 levels and enters high electric field, enter in process, operating personnel 32 current potential that mediates, operating personnel 32 is S1 to the distance of the earth electrodes such as phase cross-arm under steel tower, and operating personnel's 32 distances to electrified bodies such as middle phase conductors are S2, and should at least keep S1 and S2 sum is second distance.
Fig. 9 arrives at the schematic diagram of middle phase electrified body according to preferred embodiment of the present invention operating personnel, as shown in Figure 9, in operating personnel 32 contact after phase conductor 208 electrified bodies such as grade, in equipotential, operating personnel 32 is D4 to the distance of the earth electrodes such as steel tower tower body/middle side cross-arm/below cross-arm, and should at least keep D4 is the 3rd distance.
To sum up tell, by the preferred embodiment of the present invention, make live line working personnel in Qinghai-Tibet and blue or green new there is very high fail safe in entering tangent tower equal process in exchanging networking project.
It should be noted that, operating personnel is when upper phase tower body, to definite method of the distance of the supreme phase tower body of distance sum, operating personnel of electrified body and operating personnel, the situation when the middle phase tower body is similar with operating personnel to the distance of electrified body, operating personnel to tower body for operating personnel, does not repeat them here.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. enter a method for common-tower double-return transmission line of alternation current tangent tower equal, it is characterized in that comprising:
Operating personnel arrives at the position parallel with the electrified body of HVAC power transmission line and/or the position nearest with described electrified body by the tangent tower of ground connection, and at least keep the first distance, wherein, described the first distance is that described operating personnel is to the distance of described electrified body, described tangent tower comprises: lower phase cross-arm, middle phase cross-arm and upper phase cross-arm, be respectively used to hang the lower phase electrified body of described transmission line of alternation current, middle phase electrified body and upper phase electrified body;
Described operating personnel leaves described tangent tower, close to described electrified body, and at least keeps second distance, wherein, described second distance be described tangent tower to described operating personnel's distance, with the distance sum of described operating personnel to described electrified body;
Described operating personnel arrives described electrified body, and at least keeps the 3rd distance, and wherein, described the 3rd distance is that described operating personnel is to the distance of described tangent tower.
2. method according to claim 1, is characterized in that, described the first distance, second distance and the 3rd distance are determined according to maximum working voltage and input operating range.
3. method according to claim 2, is characterized in that, described maximum working voltage and input operating range are to determine according to the height above sea level in the region of described tangent tower setting and atmospheric density.
4. method according to claim 1, is characterized in that, operating personnel arrives at the position parallel with the electrified body of HVAC power transmission line and/or the position nearest with described electrified body by the tangent tower of ground connection, and at least keeps the first distance to comprise:
Described operating personnel in the situation that the lower phase tower body of described tangent tower, at least remain on described tangent tower lower phase tower body described operating personnel to the distance of described lower phase electrified body be described the first distance;
Described operating personnel in the situation that the middle phase tower body of described straight line tower body, at least remain on the middle phase tower body of described tangent tower or the described operating personnel of described lower phase cross-arm to the distance of described middle phase electrified body be described the first distance;
Described operating personnel in the situation that the upper phase tower body of described straight line tower body, at least remain on the upper phase tower body of described tangent tower or the described operating personnel of described middle phase cross-arm to the distance of described upper phase electrified body be described the first distance.
5. method according to claim 1, is characterized in that, described operating personnel leaves described tangent tower, close to described electrified body, and at least keeps described second distance to comprise:
In the situation that described operating personnel phase tower body from described tangent tower is close to described lower phase electrified body, the lower phase tower body that at least keeps described tangent tower to described operating personnel's distance, with described operating personnel extremely the distance sum of described lower phase electrified body be described second distance;
In the situation that described operating personnel phase tower body from described tangent tower is close to described middle phase electrified body, the middle phase tower body that at least keeps described tangent tower to described operating personnel's distance, with described operating personnel to the distance sum of described middle phase electrified body be described second distance, and keep described lower phase cross-arm to described operating personnel's distance, with described operating personnel extremely the distance sum of described middle phase electrified body be described second distance;
In the situation that described operating personnel phase tower body from described tangent tower is close to phase electrified body on described, the upper phase tower body that at least keeps described tangent tower to described operating personnel's distance, with described operating personnel to the distance sum of described upper phase electrified body be described second distance, and keep described middle phase cross-arm to described operating personnel's distance, with described operating personnel extremely the distance sum of described upper phase electrified body be described second distance.
6. method according to claim 1, is characterized in that, described operating personnel arrives described electrified body, and at least keeps described the 3rd distance to comprise:
In the situation that described operating personnel arrives described lower phase electrified body, at least keep described operating personnel to be respectively described the 3rd distance to the distance of the lower phase tower body of described tangent tower, described operating personnel to the distance of described lower phase cross-arm;
In the situation that described operating personnel arrives described middle phase electrified body, at least keep the distance of described operating personnel to the distance of the middle phase tower body of described tangent tower, described operating personnel to described lower phase cross-arm, and described operating personnel is respectively described the 3rd distance to the distance of described middle phase cross-arm;
Described operating personnel arrive described on phase electrified body in the situation that, at least keep the distance of described operating personnel to the distance of the upper phase tower body of described tangent tower, described operating personnel to described middle phase cross-arm, and described operating personnel is respectively described the 3rd distance to the distance of described upper phase cross-arm.
7. according to arbitrary described method in claim 1 to 6, it is characterized in that, described HVAC power transmission line is ± 750kV transmission line of alternation current.
8. method according to claim 7, is characterized in that, described operating personnel dresses a complete set of shielding clothing.
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| CN106786146B (en) * | 2016-12-19 | 2018-07-24 | 国网福建省电力有限公司 | Tri- identical tower window list back transmission line compact linear towers of 500kV enter equipotential operational method |
| CN110707595A (en) * | 2019-09-18 | 2020-01-17 | 国网浙江省电力有限公司金华供电公司 | Safety method for lightning arrester line to enter equipotential in live state |
| CN111934236A (en) * | 2020-07-03 | 2020-11-13 | 中国电力科学研究院有限公司 | Method for entering and exiting equipotential during live working of ultra-high voltage transmission line |
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| CN106786146B (en) * | 2016-12-19 | 2018-07-24 | 国网福建省电力有限公司 | Tri- identical tower window list back transmission line compact linear towers of 500kV enter equipotential operational method |
| CN110707595A (en) * | 2019-09-18 | 2020-01-17 | 国网浙江省电力有限公司金华供电公司 | Safety method for lightning arrester line to enter equipotential in live state |
| CN110707595B (en) * | 2019-09-18 | 2020-10-27 | 国网浙江省电力有限公司金华供电公司 | Safety method for lightning arrester line to enter equipotential in live state |
| CN111934236A (en) * | 2020-07-03 | 2020-11-13 | 中国电力科学研究院有限公司 | Method for entering and exiting equipotential during live working of ultra-high voltage transmission line |
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| CN103715630B (en) | 2016-08-17 |
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